Di-μ-hydroxy-bis(N,N,N′,N′-tetramethylenediamine)-copper(II) chloride [Cu(OH)·TMEDA]2Cl2: an efficient, practical catalyst for benzylation and allylation of amides
An efficient protocol for the benzylation or allylation of amides using the corresponding benzyl or allyl chlorides as electrophiles under basic conditions with commercially available 5 mol % of [Cu(OH)TMEDA]2Cl2 as catalyst was developed. Under these conditions, unprotected amino acids were benzylated without any racemization.
An Improved Procedure for the Formation of<i>Se</i>-Phenyl Selenoesters
作者:D. Batty、D. Crich
DOI:10.1055/s-1990-26850
日期:——
The reaction of carboxylic acids as their triethylammonium salts with benzeneselenenyl chloride in tetrahydrofuran at room temperature yields the corresponding Se-phenyl selenoesters in high yield.
Disclosed are compounds of formulae:
and salts, hydrates, or solvates thereof, where R1, R2, R3, R5, and R6 are defined herein, compositions containing these compounds, methods of preparing these compounds, and methods of using these compounds in a variety of applications, such as a surfactant or additive in personal care products.